Why do locksmiths hate WD-40?
When faced with a stubborn lock, many homeowners reach for the blue and yellow cans of WD-40. Originally designed to stop corrosion on nuclear missiles, this multi-use lubricant has ended up in many toolboxes and kitchen cupboards. Many people think that because of its reputation as a universal fix, it’s the perfect solution for noisy or stucking door.
A professional locksmith for residential, on the other hand, sees the use of WD-40 in locks quite differently and not in a good way. When applied to locks, this well-known spray does more harm than good, even though it seems to fix the problem instantly.
Let’s take a look at why the very idea of locks and WD-40 makes locksmiths cringe.
The appeal of WD-40 for DIY lock maintenance
Why do locksmiths advise against using WD-40 on locks?
- Even if it looks good at first, there can be long-term problems. A lock may work smoother at first when you use WD-40, but it’s temporary. It attracts dust and debris into the lock mechanism over time with its sticky residue.
- The residue accumulation is one of the biggest risks of using WD-40 on locks. It can seriously damage lock parts, including cylinders, pins, and springs. The oil-based formula of WD-40 can wear down these delicate parts, compromise the lock.
- The residue can corrode metal parts and deteriorate plastic or rubber components within the lock.
- Plus, WD-40 blocks proper lubrication. It replaces the lock mechanism specific lubricant and makes the parts more prone to wear and friction.